The hydrogen production rate from <70 μm thick latex coatings containing non-growing Rhodopseudomonas palustris CGA009 in the presence of 20 mM acetate is stable for >2000 hours at 2 mmol H₂ m^-2 hr^-1.  We have recently scaled the micro-photobioreactor to a 1:100^th m² (10x10 cm coating). Although the stable hydrogen production rate is significant it is lower than the initial rate of 6.3 mmol H₂ m^-2 hr^-1 observed in the first 80 hours of hydrogen production.  A number of phenomenon could be responsible for the drop in production rate including: loss of viability, protein inactivation/degradation of key intracellular components, and altered coating porosity.  Accurate and reproducible determination of the non-growth physiology during hydrogen produciton is not possible with out coating dispersion.  Described here is a redispersible latex blend that is stable enough for hydrogen production however is dispersible with mild sonication and vortexing allowing for viability and western blot analysis.